On 3/1/2022 4:12 AM, Xiang, Haihao wrote:
Hi,

fate-vsynth1-mpeg2-422 is broken after this patch (commit 17a59a6).

--- ./tests/ref/vsynth/vsynth1-mpeg2-422        2021-11-22 12:59:25.013517219 
+0800
+++ tests/data/fate/vsynth1-mpeg2-422   2022-03-01 13:30:48.446378312 +0800
@@ -1,4 +1,4 @@
-6e135a1a27235a320311a932147846b4 *tests/data/fate/vsynth1-mpeg2-422.mpeg2video
-730780 tests/data/fate/vsynth1-mpeg2-422.mpeg2video
-0273cd8463d1fc115378748239951560 
*tests/data/fate/vsynth1-mpeg2-422.out.rawvideo
-stddev:   10.27 PSNR: 27.90 MAXDIFF:  162 bytes:  7603200/  7603200
+ac2bfd738a93180bd3cb285367236d85 *tests/data/fate/vsynth1-mpeg2-422.mpeg2video
+702035 tests/data/fate/vsynth1-mpeg2-422.mpeg2video
+b8db8de89c37fab3b9a0248c2820a5ed 
*tests/data/fate/vsynth1-mpeg2-422.out.rawvideo
+stddev:   10.30 PSNR: 27.87 MAXDIFF:  167 bytes:  7603200/  7603200

configuration: --prefix=/usr --libdir=/usr/lib/x86_64-linux-gnu 
--shlibdir=/usr/lib/x86_64-linux-gnu --disable-static --enable-shared 
--enable-gpl

It works with option --disable-ssse3

Below is the info for my CPU

$ cat /proc/cpuinfo | grep 'model name' | head -1
model name      : Intel(R) Core(TM) i5-1035G1 CPU @ 1.00GHz

Thanks
Haihao

Does this help?

diff --git a/libavfilter/framepool.c b/libavfilter/framepool.c
index 5b510c9af9..8258a79845 100644
--- a/libavfilter/framepool.c
+++ b/libavfilter/framepool.c
@@ -90,7 +90,7 @@ FFFramePool *ff_frame_pool_video_init(AVBufferRef* 
(*alloc)(size_t size),
     }

     for (i = 0; i < 4 && pool->linesize[i]; i++) {
-        int h = pool->height;
+        int h = FFALIGN(pool->height, align);
         if (i == 1 || i == 2)
             h = AV_CEIL_RSHIFT(h, desc->log2_chroma_h);

It's the only behavior change i could find in the patch that could make a difference.

I'll send a different approach in a bit either way.
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